Flat File to Partner Manager in BC


I have a few questions here regarding the Partner Manager on the SAP Business Connector 4.6 .

  1. How do i send a document ( say a flat file ) to the BC(Partner Manager) from external sources ? I understand that we can set up a email port and email the document as an attachment , with the service name as the subject.
    But i do not want to send an email. Is there a way I can attach a document while using HTTP post from the browser???
  2. If I am successful in sending the flat file, can the partner manager create a routing rule??? The flat file does not have the Sender, Receiver information…

please help